Publication Date August 21, 2023 | Climate Nexus Hot News

First SoCal Tropical Storm Since '39 Drops Years Worth Of Rain

Southwest US
Combined visible/infrared satellite image of Hurricane Hilary at 12:30 p.m. EDT August 19, 2023. (Image credit: NOAA via Yale Climate Connections)
Combined visible/infrared satellite image of Hurricane Hilary at 12:30 p.m. EDT August 19, 2023. (Image credit: NOAA via Yale Climate Connections)

The remains of Hurricane Hilary, now a post-tropical storm, is inundating Southern California and northwestern Mexico, with “continued life-threatening and locally catastrophic flooding” according to the National Hurricane Center. The first tropical storm to hit Southern California since 1939, Hilary hit some areas with over a year of rainfall at once, setting off dangerous flash flooding, and threatening mudslide-prone regions of both Mexico and Southern California. “The risk in the southeastern deserts is genuinely alarming,” UCLA climate scientist Daniel Swain told the New York Times. “We’re talking, in some cases, it will be multiple years’ worth of rainfall.” And because when it rains, it (proverbially) pours, a 5.1 magnitude earthquake centered on Ojai, California, rattled the water-logged region on Sunday.

(Storm: APAPCNNAxiosYale Climate Connections; Mudslides: KTLA; Swain: New York Times $; Year of extremes: New York Times $; Climate Signals background: Hurricanes)

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